this is a qwick run whit my singel xeon x5690 @ 4,6 = 200x23 on air 1x140mm fan. not mountet in a case for the moment and whit a bad os
 
bios settings
c1e : disabled
max cpuid : disabled
coherency suport disabled
ht : disabled
a20m : disabled
speedstep : disabled
c-state : disabled
acpi : disabled
 
memory CMT6GX3M3A2000C8 DDR3 3x2 GB 2000 8-9-8-24 1.65V ver 7.1A
tcl : 7
trcd : 9
trp : 8
tras :24
 
voltage
cpu0 vcore : 1,41875v
eventual cpu0 vcore : 1,41875v
bootuo cpu vtt : 1,375v
eventual cpu0 vtt : 1,375
cpu0 dimm : 1,75v
 
signal tweaks
iho qpi 0 : -85
iho qpi 1 : -16
 

The 76°c is while running the benchmark @100% cpu load.
0% cpu load is about 45°c.
this run is white ht off.
i did a run whit ht on and ht off ,and whit stock speed.whil try tomorow agen whit a frech os and oc a bit more.

Whit frech i meen a new clean instaled os.
the 56°c is direct after the run was done.
whit just 1 140mm fan to cool the system,it need a bit time to cool down

yorkman
"As you can see, 25x turbo multi is essential for these results, and i am nowhere near 200 BCLK, so investing in high speed memory or extra motherboard cooling will not help someone with a 5680, which can do 26x Turbo."
 Not sure what this means. If my 5680's can do 26x turbo then 26x or less is possible. Now, what does it take to achieve 26x is the question. I thought I'd need the extra cooling to allow for the higher mutiplier hence stability? If not, then why cool the board? I guess we need to determine how YOU achieved 25x at that block, and try to go with the same equipment...this of course assumes the chips I'll get can be OC'd to 4.80 GHz. Btw, what temps did you get on that last run with SF? Are you 24x7 stable at 4.8 or 4.7?
  

 
Trying to understand the limits on SR OC:
BCLK: 180 is guaranteed, 190 may require high VTT( 1.375-1.4V). anything above 200 and one starts thinking about water cooling the motherboard. Sound behaves weirdly above 180BCLK.
So BCLK is our main OC tool on the SR2, but one only goes beyond 180 BCLK if it can not be avoided
 
Multi: Most Xeons have max base multi 2 steps below the all-core turbo bin multi. let's look at the X5650:
Assuming that it is possible to run 200 BCLK, the maximum you can expect without turbo is:
20x200= 4000MHz.
Now lets see what BCLK is required to run the X5650 using the all-core turbo bin at the same speed:
22*182= 4004MHz
 
So with turbo the X5650 can run at much lower BCLK. This is true for all the X56*0 Xeons.
 
Voltage: No matter how brave one are, there will come a multi x BCLk speed that no sane amount of voltage will stabilize.
My system runs as follow:
25x171= 4275MHz @ 1.3VCore (i am still testing how low 25x170 is stable)
25x187=4675@ 1.42VCore
I have tried 1.46Vcore and that only allowed me to run 23x191 for Fritzbench and 23x188 for Stockfishbench.
It is not "ten passes of Intel burnt test stable" at 1.46V even a single MHz above 23x187.
And no, i wont test 1.47V
 
Temps: On the situation that your ccoolerscan not keep the CPUs below 95ºC they will thermal throttle.
Neither the kraken nor the  nepton let the CPUs go above 72ºC, even at 1.46V.
That is why i said Corsair H75s where enough enough for the SR2, because i know from reviews that the H75 is within 4ºC of my coolers.
Improving my cooling power will not grant me a better 24x7 overclock.
 
I have no idea how much heat would a 26x/27x Xeon generates, so take my advice on cooling with a  grain of salt if you plan using X5680/X5690.
 
So why point you towards cooling solutions far above the minimum?
Because such solutions allow you to run the system quieter, and as we are talking about a chess training machine, silence is worth the money 
You will be better using a dual X5650 system with the extra thick dual 240mm rad than a X5690 system with H75s

I figured out why I only get 8 cores, I have the old version I need the newer fritz chess does anybody know a good download with out malaware in it?

Guys. I'm trying to order the SR2 from somewhere and the only places I found are here:
 
http://www.alibaba.com/showroom/evga-classified-sr--2.html
 
I have contacted some of those suppliers and the cheapest I found is $300 USD. However, I'm scared to buy because their only method of payment is wire or western union. They assure me they've been in business for years etc. but I dunno...I don't like not being able to pay with credit card or paypal. Plus, payment is sent to an individual, not the company's name. I don't like it but I can't find this board for sale anywhere, let alone $300 including shipping. It's about $350 CDN to my door. Good price.
 
I've asked the guy to send me pictures of the brand new motherboard and box and he did. It doesn't look like they've been downloaded from the internet.
 
Here's some of the pics he sent me: http://img.alibaba.com/img/product/nova/5/th/10/63/77/28/th1063772895/100003019826.jpg
http://img.alibaba.com/img/product/nova/5/th/10/63/77/28/th1063772895/100003027314.jpg
http://img.alibaba.com/img/product/nova/5/th/10/63/77/28/th1063772895/100003189019.jpg
http://img.alibaba.com/img/product/nova/5/th/10/63/77/28/th1063772895/100003019825.jpg
 
The one I'm buying from is 
Floral Manufacturing Group Co., Ltd.
 
Strangely, if I google that name with alibaba a different floral manufacturing group co. comes up...different meaning the company's address is different, contact info, etc. But I dunno how there can be two floral manufacturing groups on that site. Well, I don't think I have a choice but to risk it. Nobody else is selling this except ebay, for like $900, used.

Just buy that $1300 system and add your new cpu's that you ordered. I would not alibaba buy anything.
Oh yea 12 cores now on Fritz Benchmark 25085 with a lot of of other things running.
 

some more test whit diferent multi and fsb
i have 4 more ,but i can not uploud even if they ar lower than 500kb
200*24 is booting but the benchmark give error.trayd vcore to +-1,465v but stil no go and i don't go higher whit vcore
200*23 @ 1,411V 19683
177,55*26 @ 1,423V 19357
178,55*26 @ 1,423V 19446
180,52*26 @ 1,458V 19580

geok1ng
skull, what i would try in your place:
-Lower multi on BIOS to 15x and BCLK to 150 to see if 27x turbo kicks in
-Lower memory divider to 2:8 and test bench with CAS 6 (if it boots)
 
Those attempts try to decrease the burden on IMC/chipset, which in turn may allow you to run with lower VTT, so you gain some wriggling room.
 
Even so apparently you are hitting a "sane voltage" wall.

Its booting @15x150 and ram 2:8 600 cl6.
but no turbo.
edit: i need to enabel speedstop for turbo.i totaly forgat it

 this is my lowes vcore and vtt
   
this is my max stabel oc whit turbo.
 

for a beter oc it need more vcore and vtt than all the rest and runs to hot mid 80°c

yes i can run 27x172 @ 1,423v (bios 27x173 +-1,425v max 1,43v)
i use always cpu-z and for me its always acurate.
if you wane know how fast its can run whit dry ice cooling and low voltage
http://hwbot.org/submission/2193117_skulstation_cpu_frequency_xeon_x5690_5136.6_mhz
http://img.hwbot.org/u21574/image_id_630492.jpeg

geok1ng

yorkman
Ok. So for my dual x5680's you're saying I should go with dual H75's unless I want the pc to run more quiet? Did I understand you correctly? I didn't know a custom loop would be so much quieter than a dual H75 setup.
At least the H75's are cheap. I can buy them locally too at $70 CDN + tax as they have a promotion for the next 2 weeks.
 Now, what ram would you recommend I go with for this chess machine and best chance of top OC? And ECC or non-ecc?

here are noise test at max fan
and here are temp tests at using overclocked LGA1366 CPU
 
Looking at both charts, one can guesstimate that H75s won't reach 90ºC on the SR2. If you can find them cheap, the H105 is a good compromise between the H75 silence and the Nepton 280L temps. the best of both worlds ( size, temp, noise ) is the Nepton 140XL  at $100.
 
One reason to consider going with the Nepton 140Xl is that it would make better use of your case size, while still being compatible with Indigo Extreme TIM.
 
as i said, sourcing 6 sticks of identical RAM is very hard. Whether you will run 12, 24 or 48GB is up to your usage scenario. The SR2 can double duty as a virtual machine server for your family/business, in which case you may justify going 48GB, but choosing the skull way, very high speed 2GB sticks is viable, and you definitively remove memory from you overclock bottlenecks. as you see from the results, 2GB 2000MHz CAS7 behaves on par with 8GB 1333MHz CAS9 ECC OC-wise.
 

What exactly does "sourcing" mean in this case? Using? That would mean you're saying that using 6 identical ram is very hard. Why? The ram should all be identical, but this is bad for SR-2? I'm probably just misunderstanding you.
 
I think I'm more than good with 24 GB ram. I've been using 16 GB all this time and that was fine too. I just want to take advantage of the triple channels in this board. So how about the Kingston HyperX, or should I go with higher MHz, like 2000 or higher?:
 

• KHX1600C9D3K6/24GX
  
  24G 1600MHZ DDR3 NON-ECC CL9 DIMM 6K XMP 
  Quick Specs:
• Error CheckingNon-ECCNumber of Modules6 x 4 GBNumber of Pins240-pinSignal ProcessingUnbufferedForm FactorDIMMMemory Speed1600 MHzMemory Size24 GBMemory TechnologyDDR3 SDRAMMemory StandardDDR3-1600/PC3-12800 
  Though it's not cheap @ $370 to my door :-(
  Oh and H105's are not cheap here. Might as well go with 2xH110 though I'm not sure if that'd fit. And you're swaying from the H75 because of high temps, correct? Too bad...they're only $75 each here for another week or so.
  

geok1ng
woa! You can select 27x on BIOS? I was thinking that the max base clock for X5690 was 25x, so one would only see 12-25 on BIOS, even though cpuz shows 12-28 in windows. 28x is the 1-2 cores turbo bin and 27x the all core turbo bin, those are NOT available on BIOS screen, or so i believed. 
 
So what i feared is true: X5690 is not that better than a X5680, as the same clock speed of 27x172 can be reached with 26x178, still below the magical BCLK 180 mark.

on default bios settings i can select max 26x
i did not try other Muli than 15x this time.
 

by sourcing i meant locating a source, as in finding a link with a product on sale adequate to your build. ideally you want either a closed kit with 6 sticks of RAM or two kits of 3 sticks each.

geok1ng
by sourcing i meant locating a source, as in finding a link with a product on sale adequate to your build. ideally you want either a closed kit with 6 sticks of RAM or two kits of 3 sticks each.

Yes, but what is the most recommended model & speed for my OC'ing? I suggested 2000MHz and 1600 but you haven't said anything about that so I'm not sure.